加快与SSD的编译时间 [英] Speed up compile time with SSD

问题描述

我想尝试加快我的C ++项目的编译时间。他们有大约3M行代码。

I want to try to speed up my compile-time of our C++ projects. They have about 3M lines of code.

当然，我不需要总是编译每个项目，但有时有很多源文件被其他人修改，我需要重新编译所有文件（例如，当有人更新 ASN.1 源文件时）。

Of course, I don't need to always compile every project, but sometimes there are lot of source files modified by others, and I need to recompile all of them (for example, when someone updates an ASN.1 source file).

我测量到编译一个中间项目（不涉及所有的源文件）大约需要三分钟。我知道这不是太多，但有时它真的无聊等待编译..

I've measured that compiling a mid-project (that does not involves all the source files) takes about three minutes. I know that's not too much, but sometimes it's really boring waiting for a compile..

我试图将源代码移动到SSD（旧的OCZ顶点3 60 GB），基准测试，它比HDD快5到60倍（特别是在随机读/写）。无论如何，编译时几乎是一样的（也许2-3秒更快，但它应该是一个机会）。

I've tried to move the source code to an SSD (an old OCZ Vertex 3 60 GB) that, benchmarked, it's from 5 to 60 times faster than the HDD (especially in random reading/writing). Anyway, the compile-time is almost the same (maybe 2-3 seconds faster, but it should be a chance).

也许将Visual Studio bin移动到SSD授予额外的性能增量？

Maybe moving the Visual Studio bin to SSD would grant additional increment in performance?

只是为了完成这个问题：我有一个W3520 Xeon @ 2.67 GHz和12 GB的DDR3 ECC。

Just to complete the question: I've a W3520 Xeon @2.67 GHz and 12 GB of DDR3 ECC.

推荐答案

C ++编译/链接受处理速度的限制，而不是HDD I / O。这就是为什么你没有看到任何增加的编译速度。
（将编译器/链接器二进制文件移动到SSD将不会执行任何操作）当编译一个大项目时，编译器/链接器和必要的库将被读入内存一次，并保持在那里。）

C++ compilation/linking is limited by processing speed, not HDD I/O. That's why you're not seeing any increase in compilation speed. (Moving the compiler/linker binaries to the SSD will do nothing. When you compile a big project, the compiler/linker and the necessary library are read into memory once and stay there.)

在编译C项目时（这比使用模板等的C ++项目花费的时间少得多），我已经看到一些小的加速，从工作目录移动到SSD或ramdisk，但不是足以让它值得。

I have seen some minor speedups from moving the working directory to an SSD or ramdisk when compiling C projects (which is a lot less time consuming than C++ projects that make heavy use of templates etc), but not enough to make it worth it.

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